Biology - Online Test
Q1. Axial skeleton consists of
Answer : Option A
Explaination / Solution:
The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.
Q2. The first transgenic cow was
Answer : Option C
Explaination / Solution:
In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk at 2.4 grams per litre. This transgenic milk is a more nutritionally balanced product than natural bovine milk and could be given to babies or the elderly with special nutritional or digestive needs.Rosie’s milk contains the human gene alpha-lactalbumin.
Q3. Which one of the following correctly matched STD with pathogen
Answer : Option C
Explaination / Solution:
Syphilis is caused by bacteria Treponemapallidum. AIDS are caused by HIV, Gonorrhea is by bacterium Neisseria gonorroeae. Uretheritis is not a sexually transmitted disease.
Q4. Which of the following has highest water potential?
Answer : Option A
Explaination / Solution:
Distilled water do not contain any kind of salt in it so its water potential is 0. Addition of solute results into further decrease in water potential in negative term.
Q5. Myelin sheath is derived from
Answer : Option D
Explaination / Solution:
The outer layer of axon of nerve cells is called myelin sheath. Myelin sheath is derived from Schwann cells.
Q6. A distinction between unicellular and multicellular is not possible in
Answer : Option B
Explaination / Solution:
Algae grouped together the unicellular organisms and the multicellular ones.
Q7. Which kind of embryo is shown in figure below
Answer : Option D
Explaination / Solution:
The zygote divides mitotically many times to form large number of cells. These cells arrange into different shape. The most common embryo is Globular embryo.
Q8. Age groups among human population includes all except
Answer : Option C
Explaination / Solution:
Age groups among human population includes reproductive, pre-reprouctive and post reproductive growth. It do not includes embryonic phase growth.
Q9. Amino acid derivatives in which –OH component of carboxylic group is replaced by another amino group are called
Answer : Option C
Explaination / Solution:
Amides are obtained from the replacement of –OH component of carboxylic group of amino acid by another amino group.
Q10. The secretions released into small intestine are
Answer : Option D
Explaination / Solution:
The bile, pancreatic juice and the intestinal juice are the secretions released into the small intestine.
